Biology, asked by Mikyman1971, 1 year ago

Tube test are characteristic feature of

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Answered by Lordman
1

Answer:

Chameical Reaction as it is used for experimental purposes

Answered by sakshi85150
1

A tube tester is an electronic instrument designed to test certain characteristics of vacuum tubes (thermionic valves). Tube testers evolved along with the vacuum tube to satisfy the demands of the time, and their evolution ended with the tube era. The first tube testers were simple units designed for specific tubes to be used in the battlefields of World War I by radio operators, so they could easily test the tubes of their communication equipment.

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